CVE-2026-67631: Microsoft SQL Server Remote Code Execution Vulnerability
Published Sep 8, 2026
·Updated
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft SQL Server Remote Code Execution Vulnerability
— Microsoft
Affected Software
16 affected componentsFixes available
Microsoft SQL Server 2025 (CU8)<17.0.4085.5
17.0.4085.5
Microsoft SQL Server 2019 (CU 32)<15.0.4490.9
15.0.4490.9
Microsoft SQL Server 2019<15.0.2190.7
15.0.2190.7
Microsoft SQL Server 2017 (CU 31)<14.0.3550.4
14.0.3550.4
Microsoft SQL Server 2022<16.0.1200.5
16.0.1200.5
Microsoft SQL Server 2017<14.0.2130.4
14.0.2130.4
Microsoft SQL Server 2025<17.0.1135.8
17.0.1135.8
Microsoft SQL Server 2022 (CU 26)<16.0.4275.2
16.0.4275.2
Microsoft SQL Server 2017<14.0.2130.4
Microsoft SQL Server 2017>=14.0.3006.16<14.0.3550.4
Microsoft SQL Server 2019<15.0.2190.7
Microsoft SQL Server 2019>=15.0.4003.23<15.0.4490.9
Microsoft SQL Server 2022<16.0.1200.5
Microsoft SQL Server 2022>=16.0.4003.1<16.0.4275.2
Microsoft SQL Server 2025<17.0.1135.8
Microsoft SQL Server 2025>=17.0.4006.2<17.0.4085.5
Remediation
Event History
Sep 8, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·05:10 PM
Data Sourced
via MITRE·05:10 PM
DescriptionSeverity
Data Sourced
via NVD·06:18 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What level of access does an attacker need to exploit this vulnerability?
The attacker must be authorized, meaning they need valid access to the affected SQL Server. Exploitation can be performed over the network and does not require user interaction.
2
What is the potential impact if exploitation succeeds?
A successful exploit allows code execution on the affected SQL Server. The supplied severity vector indicates high impacts to confidentiality, integrity, and availability.
3
Which SQL Server releases are identified as affected?
The listed affected software includes SQL Server 2017, 2019, 2022, and 2025, including SQL Server 2017 CU31, SQL Server 2019 CU32, SQL Server 2022 CU26, and SQL Server 2025 CU8.